Hi all, I used oh323 support from inaccess. It work very well. I would like to test h323 integrated support. This my problem when I test it : I cannot heard any thing in both way. The test is : SIP --> Asterisk --> H323 This is th debug trace from h.323 : -- Executing Dial("SIP/someaccount", "H323/0033172897104@somehost") in new stack Allowed Codecs: Table: G.711-ALaw-64k <1> UserInput/hookflash <2> UserInput/RFC2833 <3> Set: 0: 0:I> G.711-ALaw-64k <1> 1:I> UserInput/hookflash <2> 2:I> UserInput/RFC2833 <3> -- Making call to 0033172897101@213.249.97.67:1720 without gatekeeper. == New H.323 Connection created. -- root is calling host 0033172897101@213.249.97.67:1720 -- Call token is ip$localhost/32668 -- Call reference is 32668 -- DTMF Payload is [pt=101] -- Called 0033172897101@syntax -- Sending SETUP message -- Transmitting RFC2833 on payload 101 -- Started logical channel: receiving G.711-ALaw-64k -- channelsOpen = 1 External RTP Session Starting RTP channel id 1 parameters: -- remoteIpAddress: 213.249.97.77 -- remotePort: 14190 -- ExternalIpAddress: 127.0.0.1 -- ExternalPort: 19286 -- Started logical channel: sending G.711-ALaw-64k -- channelsOpen = 2 External RTP Session Starting RTP channel id 1 parameters: -- remoteIpAddress: 213.249.97.77 -- remotePort: 14190 -- ExternalIpAddress: 127.0.0.1 -- ExternalPort: 19286 =-= In OnAlerting for call 32668: sessionId=0 -- Ringing phone for "0033172897101" - Progress Indicator: 8 -- H323/syntax is making progress passing it to SIP/acfh6y8OQc33-155e -- H323/syntax is ringing -- Transmitting RFC2833 on payload 101 =-= In OnConnectionEstablished for call 32668 -- Connection Established with "0033172897101" -- H323/syntax answered SIP/acfh6y8OQc33-155e -- Received Facility message... -- Received Facility message... -- Received Facility message... -- ClearCall: Request to clear call with token ip$localhost/32668, cause EndedByRemoteUser -- Sending RELEASE COMPLETE channelsOpen = 1 channelsOpen = 0 ExternalRTPChannel Destroyed ExternalRTPChannel Destroyed -- 0033172897101 has cleared the call == H.323 Connection deleted. I think that the ExternalIpAddress is wrong (127.0.0.1), should be server's public IP address, isn't it ? Thanks for your help. Laurent